Library-shelf.



No. 775,496. PATENTED NOV. 22, 1904.

N. B. PARSONS.

LIBRARY SHELF.

APPLIOATION FILED MAR. 21, 1904.

N0 MODEL.

J 7 WV Mam 1 50. 775,496. Patented November 22, 1904.

AT NT tripe.

llivirnn STATES NEWELL B. PARSONS, OF CHICAGO, ILLINOIS, ASSIGNOR TO LIBRARY BUREAU, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

LIBRARY-SHELF.

SPECIFICATION forming part of Letters Patent No. 775,496, dated November 22, 1904. Application filed March 21, 1904. Serial No. 199,261. (No model.)

port the same, as set forth in the applications above identified.

My improved sliding shelf runs between two substantially horizontal bars of channel-iron O, secured to the toothed bars B. Each of these channel-bars O has secured to it two clips O O preferably movable on the channel-bar. The clips are secured in place by .ful improvements in libraryshelves; and its rivets 0, passing through slots in the clips and object is to produce a device of this class which secured in the channel-bar, thus permitting shall have certain advantages which will aplongitudinal movement of the clips on the pear more fully and at large in the course of channel-bar. The construction of the clips this specification. O O is clearly indicatedin Fig. 5, from which To this end my invention consists in certain it will be seen that each bracket preferably novel features of construction, which are has suitable teeth 0', which engage with corclearly illustrated in the accompanyingdrawresponding teeth on the ratchet-bars B, a i ngs and described in this specification. flange 0 which overhangs the edge of the cor- In the aforesaid drawings, Figure 1 is a perresponding ratchet-bar, and a projecting lug spective viewof my improved device. Fig. 0 The channel-bars are secured in place upon 2 is an end view,

Tr) (bZZ 1071 0171 it may concern.-

Be it known that I, NEWELL B. PARsoNs, a citizen of the United States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Library-Shelves, of which the following isa specification.

My invention relates to certain new and usecertain parts of one of the the supports by placing them at the desired supporting-posts being cut away in the line height, with the teeth a in position to engage 2 2 of Fig. 4, the view being in the direction with the teeth on the ratchet-bars, and then of the arrow. Fig. 3 is a vertical cross-secdrawing the brackets together by a screw D, tion in the line 3 3 of Fig. 4:. Fig. 4 is asecwhich passes through the lugs a", above detion in the line 4 4 of Fig. 1 looking upward, scribed. A block G is preferably secured to and Fig. 5 is a perspective view of one of the each channel to hold the bars B apart when locking members. I the latter are arranged in pairs and would The shelf herein illustrated may be emotherwise be liable to be distorted by the presployed in a great variety of constructions and sure of the clamping-screw. W'hen the chanis particularly useful in connection with I nel-bars have been thus secured in place, a library-stacks of the type shown in the joint shelf E is slidinto place between. This shelf application of myself, William H. Winslow, in the preferred form of construction is made and Jackson L. Kail, filed on even date hereofsheet metal withdownwardly-turnedflanges with and allotted Serial No. 199,272, and in e at its ends and downwardly-turned beads 0 my application filed on even date herewith at its edges to give it the desired stiffness. and allotted Serial No. 199,262. WVhen used I When the shelf is in place, a split pin F is with such a stack, its object is to produce passed through thelower flange of each chana shelf which can be placed immediately unnel-bar and'secured in place by spreading its der the book-shelves proper and which can upper ends, this pin serving by engagement be pulled out in either direction to make an i with the beads 67 to prevent the removal of additional shelfsuitable for laying books upon l the shelf from place. In fact, this pin limits for reference or for piling them upon in -getthe movement of the shelf to approximately ting them out or putting them away. i one-half its total width in either direction.

In the drawings, which show my preferred It will be seen that with my improved strucconstruction, A indicates the two supporting I ture a shelf is provided which is exceedingly end posts of the stack, each of which bears cheap and simple in construction and which can be placed under the shelves of a librarystack and slid out on either side of the stack to form an extra width of shelf.

upon its inner surface two bars B, having projecting teeth which are adapted to coact with corresponding teeth on the shelving to sup 1 \Vhile I have shown and described a clamping device for my improved shelf which is, particularly adapted to engage with the ratchet-bar supporting device of the shelving shown in the applications already mentioned, I do not intend to limit myself to such specified clamping device, it being evident that the broad principles herein described can be embodied in a structure utilized upon stacks of different construction. 1

I realize that considerable variation is possi- 1 ble in the details of this construction without departing from the spirit of the invention, and I therefore do not intend to limit myself to the specific form herein shown and described.

I claim as new and desire to secure by Letters Patent 1. In a device of the class described, the combination with suitable vertical supports, of op posing substantially horizontal channel-bars supported thereby, a shelf running between said channel bars, and movable therein in either direction, and means for limiting such movement.

2. Ina device of the class described, the combination with suitable vertical posts, of two 0pposing substantially horizontal channel-bars supported thereby, a shelf running between said channel bars and movable therein in either direction, downwardly -projecting engagement members at opposite edges of the shelf at the ends, and a stop in each channelbar engaging with the projecting members to limit the movement of the shelf.

8. In a device of the class described, the combination with suitable supporting-posts, of opposing substantially horizontal channel-bars supported thereby, a sheet-metal shelf having downwardly-turned flanges along its ends, and

downwardly-turned beads at its sides running between said channel-bars, and a pin at the center of each channel-bar, engaging with beads on the shelf to limit the movement thereof in either direction.

4:. In a device of the class described, the combination with supportingposts, having longitudinal supporting members adjacent to their edges, arranged to support two shelves, side by side, and extending out on either side of the post, of shelf-supporting bars secured upon said supporting members, and a shelf of a width equal to the combined width of the two shelves and adapted to be slid on said shelfsup porting bars.

5. In adevice of the class described, the combination with supporting-posts, of horizontally-opposing channel-bars vertically adjustable upon the posts, clamps for securing the channel-bars in place, and a sliding shelf supported by the channel-bars and horizontally movable therein.

6. In a device of the class described, the combination with a double tier of shelves having supporting-posts provided with shelfsupporting means upon opposite sides thereof to support the two tiers of shelves, of opposing horizontal bars secured to the faces of the supporting-posts and extending laterally beneath both tiers of shelves, and a sliding shelf supported between and upon these bars and sliding in either direction from a position beneath the shelves to one upon either side thereof.

In witness whereof I have signed the above application for Letters Patent, at Chicago, in the county of Cook and State of Illinois, this 25th day of February, A. D. 190

NEWELL B. PARSONS Witnesses:

RUssELL WILES, CHAS. O. SHERVEY. 

